关键词: 无线传感器网络, 故障检测, 残差比, 历史数据, 邻居协作, 集中故障

Abstract:

A new fault detection mechanism based on historical data and neighbor-coordination was presented. It gives the combination of detection methods was given based on historical data with the detection ways from neighbor-coordination. Simulation shows that the fault detection mechanism based on historical data and neighbor-coordination can be not only applied to the scene where the nodes are randomly distributed, but also for scenarios in which the failed nodes are intensive. The detection accuracy can reach 96.7% or more although the average degree of the nodes reduces or the failure rate of the nodes increases. In addition, different nodes only communicate few messages with each other in this detection mechanism. And thus, the energy of the node and the bandwidth of the channel can be saved.

Key words: wireless sensor network, fault detection, residual ratio, history data, neighbor-coordination, intensive fault